Safety-razor



F. DE GRAZIA.

SAFETY RAZOR.

AP-"LiCATION FILED MAY 20, 1920 Patented Dec. 13, 1921.

F|ca.1.

UNITED STATES PATENT OFFICE.

FERDINANDO DE eRAzIA, or wasnnvo ron, DISTRIGT or comiivrnm.

SAFETY-molt.

Specification of Letters Patent.

Patented Dec. 13, 1921 Application filed May 20,1920. Serial No.382,953.

- guard plate having a guard roller removably journaled at each edgethereof in proximity of the cutting edge of the blade to protect thecuttinge'dge of the blade.

A further object of the invention resides in the provision of a guardplate for safety razors wherein'a guard roller is removably journaledadjacent each side edge of the guard plate to protect the cutting-edgeof the blade and to be substituted for the usual form of guard platehaving a serrated toothed edge.

With the above and other objects in view,

the invention consists in the novel form, combination and arrangement ofparts hereinafter more fully described and shown in the accompanyingdrawing, wherein like reference characters designate similar partsthroughout the several views.

In the drawing, Figure 1 is a perspective view of a safety razorconstructed in accordance with the present invention, showing the guardrollers removably journaled in the opposite sides of the guard plate,

Fig.8 is a vertical transversb sectional view of the razor, with thehandle-partially broken away,

Fig. 3 is an end elevational view of the device with the handlepartially brokenaway and with the guard rollers shown in dotted lines asremoved-from the guard plate.

. Fig. 4 is a. cross sectional view taken on line IVIV showing theresilient gripping fingers carried by the end flanges of the guard platefor revolubly supporting the guard rollers,

Fig. 5 is a detached perspective view of the improved guard plate, and

Fig. '6 is a perspective view ofone of the guard rollers removed fromthe guard plate.

The present invention has for its primary object to provide a substituteguard plate for the type of safety razor known as the (i illette andemb'odiesguard rollers removably journaled' at each side of the guardplate to function in lieu of the guard teeth upon the plate of thesafety razor referred to. The guard rollers are carried by the sideedges of the guard plate slightly in advance of the cutting edge'of therazor blade,

and protect the cutting edge of the blade and further present the entiresurface to be shaved to the cutting edge of the blade. In

are employed, the razor in cutting only presents spaced portions of itscutting edge for a cutting operation due to a contact of'the cut-tingedge of the razor blade with the guard teeth and it is necessary todirect the cutting movement of the razor in many directions to assure acomplete shavlng operation. The guard plate has uninterrupted oppositeedges and is formed on a transverse 'arc coincident with the innercurved face of the clamping plate while end flanges carried by the guardplate have the opposite ends thereof bifurcated to form resilientfingers for engaging and revolubly supportingathe guard rollers.

eferring more in detail to the accompanying drawing and'particularlyto'Figs. 1, 2, and 4, there is illustrated a safety razor embodyingaclamping plate 7 of elongated form and transversely curved and taperedat the opposite edges thereof as illustrated. A screw plug 8 centrallyprojects from the inner curved face of the plate 7 for engagement in thethreaded socketed end 9 of the handle 10. The type of razor bladeemployed with this holder and clamping plate mcludes a single openingfor the passage of the screw plug 8 and oppositely positioned openingsfor the passage of the guide fingers 11 extending in alinement with thescrew pli ig 8.

he guard'plate employed in this safety razor embodies a plate section 12transversely curved colncldent to the curvature 100 in Figs. 2 and 5.The guard plate 12 is 105 coextensive with the clamping plate 7 and isprovided upon each end thereof with an inwardly directed flange 14, ofslightly increased breadth at the opposite ends thereof with the ends ofthe flanges l4 bifurcated 11c devices of this character where guardteeth as at 15 to form resilient gripping fingers,

the end flanges 14 projecting laterally of the guard plate 12 as shownin Fig. ,5. A guard roller is removably journaled in each side of theguard plate 12 and embodies a cylindrical body portion 16 having areduced bearing 17 at each end thereof. The

roller bearings 17 are positidned between the resilient fingers formedby the bifurcation 15 and are retained in opposed curved recesse 15'formed in the resilient fingers, the rollers being permitted freely torevolve within their bearings and prevented. from accidentaldisplacement by the resiliency of the fingers. When so positioned, theguard rollers 16 project beyond the oppositeedges of the guard plate 12and in position to protect the cutting edge of a razor blade.

In assembling the different parts of the razor, assuming that the handle10 is detachedfrom the'screw plug 8 of the clamping plate, a razor blade18 having three alined openings therein is placed upon the clampingplate with the fingers 11 projecting through the end openings and thescrew plug 8 projecting through the central opening thereof. The guardplate is then positioned upon the clamping plate and in en-i gagementwith the blade 18. The socketed end 9 of the handle 10 receives thescrew p plug, the end 9 of the handle engages the inner face. of theguard plate 12, and said blade 18 being flexible, the same is curved bythe guard plate 12 moving into proximity of the clamping plate 7 to-betensioned between the two plates and locked therebetween by the screwhandle 10. When so arranged, the opposite cutting edges 18' of the blade18 are positioned inwardly of the guard rollers 16 as shown in Figs. 1,3, and 4 to be protected by the rollers and also sufliciently spacedtherefrom to present the entire cutting edge of the blade for operation.In using the'device, the guard roller 16 rolls over the surface to beshaved and presents the "entire surface contacted by the roller to thecutting edge of the blade. In this manner, the entire cutting edge ofthe blade is subjected to operation as distinished from the alternatecutting portions of a blade that is protected by a toothed guard plate.In cleaning the device, the sev- 8 and by screwing the handle upon the"handle 10 and the guard rollers 16 are readily removable from the guardplate 12 by forcing the same from the open outer ends .of the resilientfingers carried by the end iflanges. If desired, the bearing ends 17 ofthe roller 16 may project a sufficient distance beyond each end of theguard plate 12 to facilitategripping of the roller bearings duringremoval of the roller from the guard plate. Also, knobs or heads may beformed on the ends of the bearings for grasping during removal.

It is intended to construct the complete safety razor in accordance withthe invention as above outlined, and also to manufacture the guard platealone as a substitute for the form of toothed guard plate in the safetyrazor referred to. While there is herein shown and described thepreferred embodiment of the invention, it is nevertheless to beunderstood that minor changes may 'be made therein, without departing istransversely curved and is provided with end flanges extending laterallyof the plate, spaced resilient fingers formed on the extensions of theend flanges, and guard rollers removably journaled in the resilientfingers and retained in operative position on said plate by theresiliency of said fingers.

3. In a safety'razor of the type described,

wherein a guard plate and clamping plate engage a razor blade, withguard rollers removably ournaled on said guard plate, said guardplatebeing constructed to resiliently maintain the guard rollers inoperative position thereon and to permit removal of the guard rollers byforceful extraction against the resilient retaining means therefor.

In testlmony whereof I affix my signature.

FERDINANDO DE GRAZIA.

